thanks for the help but ended up fixing it somehow
I went into services and spotted:
MSSQL$SONY_MEDIAMGR
2 entries and both on automatic startup I disabled them, I then deleted any folders linked to Sony vegas or acid. At which point I ran ccleaner just in case. I also ran hijackthis and found another MSSQL$SONY_MEDIAMGR which I normally couldn't delete but now it has and the error has vanished!
Not only that the slow down with my comp which I was worried was a hard drive failure was down to this! phew!. Thanks for the help though warez I doubt I would have got to the problem if I didn't check the event viewer.
Your help has been greatly appreciated
.